电信科学 ›› 2013, Vol. 29 ›› Issue (9): 94-97.doi: 10.3969/j.issn.1000-0801.2013.09.018

• 研究与开发 • 上一篇    下一篇

DNS服务器缓存失效过程的研究

危婷1,冷峰1,张跃冬1,黄向阳2,王伟2,何峥1,赵琦1,于俊锋1   

  1. 1 中国互联网络信息中心 北京100190
    2 中国科学院计算机网络信息中心 北京100190
  • 出版日期:2013-09-20 发布日期:2017-06-22

Study of Resource Record Cache Expiring of DNS Server

Ting Wei1,Feng Leng1,Yuedong Zhang1,Xiangyang Huang2,Wei Wang2,Zheng He1,Qi Zhao1,Junfeng Yu1   

  1. 1 China Internet Network Information Centre, Beijing 100190, China
    2 Computer Network Information Center, Chinese Academy of Sciences, Beijing 100190, China
  • Online:2013-09-20 Published:2017-06-22

摘要:

在DNS中,为了减轻根服务器的负担,递归服务器会缓存一部分资源记录(RR)。如果由于网络拥塞或者其他因素,递归服务器与权威服务器之间的通信中断,那么递归服务器中的RR缓存将开始起作用,并最终决定其解析服务的质量(QoRS)。通过对RR缓存失效过程进行理论分析和数学建模,研究了上述情况下影响递归服务器的QoRS的因素以及这些因素是如何影响QoRS的。

关键词: DNS, 解析服务质量, 数学建模, 递归服务器

Abstract:

In domain name system(DNS), in order to alleviate the load of root servers, recursive servers cached some resource records(RR). If communication link to root server(or other authoritative servers)broke due to network and other reasons, the cache of RR in recursive server decided the quality of resolving services(QoRS). It was explored that factors impact QoRS and how through theoretical analysis and mathematical modeling.

Key words: domain name system, quality of resolving service, mathematical modeling, recursive server

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